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                    第 1 章 Kafka 概述
            
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                    1.1 消息队列
            
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                    1.2 为什么需要消息队列
            
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                    1.3 什么是 Kafka
            
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                    1.4 Kafka 架构
            
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                    第 2 章 Kafka 集群部署
            
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                    2.1 下载 Kafka
            
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                    2.3 Kafka 常用命令操作
            
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                    第 3 章 Kafka 工作流程分析
            
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                    3.1 Kafka 生产过程分析
            
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                    3.2 broker 保存消息
            
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                    3.4 Kafka 消费过程分析
            
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                    4.2 Kafka 生产者 API
            
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                    4.3 Kafka 消费者 API
            
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                    4.3.1 Kafka 消费者之高级 API
            
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                    4.3.2 Kafka 消费者之低级 API
            
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                    5.1 拦截器原理
            
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                    6.1 概述
            
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                    6.2 Kafka Stream 数据清洗案例
            
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                    第 7 章 扩展
            
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                    7.1 Kafka 和 Flume 比较
            
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                    7.2 Kafka 和 Flume 集成
            
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                    7.3 Kafka 配置信息
            
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                    7.3.1 broker 配置信息
            
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                                <h1 id="32-broker-&#x4FDD;&#x5B58;&#x6D88;&#x606F;">3.2 broker &#x4FDD;&#x5B58;&#x6D88;&#x606F;</h1>
<p>&#x7269;&#x7406;&#x4E0A;&#x628A; topic &#x5206;&#x6210;&#x4E00;&#x4E2A;&#x6216;&#x591A;&#x4E2A; patition&#xFF08;&#x5BF9;&#x5E94; <code>server.properties</code> &#x4E2D;&#x7684;<code>num.partitions=3</code>&#x914D;&#x7F6E;&#xFF09;</p>
<p>&#x6BCF;&#x4E2A; patition &#x7269;&#x7406;&#x4E0A;&#x5BF9;&#x5E94;&#x4E00;&#x4E2A;&#x6587;&#x4EF6;&#x5939;&#xFF08;&#x8BE5;&#x6587;&#x4EF6;&#x5939;&#x5B58;&#x50A8;&#x8BE5; patition &#x7684;&#x6240;&#x6709;&#x6D88;&#x606F;&#x548C;&#x7D22;&#x5F15;&#x6587;&#x4EF6;&#xFF09;&#xFF0C;&#x5982;&#x4E0B;&#xFF1A;</p>
<p><img src="http://lizhenchao.oss-cn-shenzhen.aliyuncs.com/1541728622.png-atguiguText" alt="">
<img src="http://lizhenchao.oss-cn-shenzhen.aliyuncs.com/1541728649.png-atguiguText" alt=""></p>
<hr>
<h2 id="321-&#x5206;&#x533A;&#x5206;&#x914D;">3.2.1 &#x5206;&#x533A;&#x5206;&#x914D;</h2>
<p>&#x5728;&#x521B;&#x5EFA;&#x4E3B;&#x9898;&#x65F6;&#xFF0C; Kafka &#x9996;&#x5148;&#x4F1A;&#x51B3;&#x5B9A;&#x5982;&#x4F55;&#x5728; broker &#x95F4;&#x5206;&#x914D;&#x5206;&#x533A;&#x3002;</p>
<p>&#x5047;&#x8BBE;&#x4F60;&#x6709; 6 &#x4E2A; broker &#xFF0C;&#x6253;&#x7B97; &#x521B;&#x5EFA;&#x4E00;&#x4E2A;&#x5305;&#x542B; 10 &#x4E2A;&#x5206;&#x533A;&#x7684;&#x4E3B;&#x9898;&#xFF0C;&#x5E76;&#x4E14;&#x590D;&#x5236;&#x7CFB;&#x6570;&#x4E3A; 3&#x3002;&#x90A3;&#x4E48; Kafka &#x5C31;&#x4F1A;&#x6709; 30(<code>10*3</code>) &#x4E2A;&#x5206;&#x533A;&#x526F;&#x672C;&#xFF0C; &#x5B83;&#x4EEC;&#x53EF;&#x4EE5;&#x88AB;&#x5206;&#x914D;&#x7ED9; 6 &#x4E2A; broker&#x3002;
&#x5728;&#x8FDB;&#x884C;&#x5206;&#x533A;&#x5206;&#x914D;&#x65F6;&#xFF0C;&#x6211;&#x4EEC;&#x8981;&#x8FBE;&#x5230;&#x5982;&#x4E0B;&#x7684;&#x76EE;&#x6807;&#x3002;</p>
<ol>
<li><p>&#x5728; broker &#x95F4;&#x5E73;&#x5747;&#x5730;&#x5206;&#x5E03;&#x5206;&#x533A;&#x526F;&#x672C;&#x3002;&#x5BF9;&#x4E8E;&#x6211;&#x4EEC;&#x7684;&#x4F8B;&#x5B50;&#x6765;&#x8BF4;&#xFF0C;&#x5C31;&#x662F;&#x8981;&#x4FDD;&#x8BC1;&#x6BCF;&#x4E2A; broker &#x53EF;&#x4EE5; &#x5206;&#x5230; 5 &#x4E2A;&#x526F;&#x672C;&#x3002;</p>
</li>
<li><p>&#x786E;&#x4FDD;&#x6BCF;&#x4E2A;&#x5206;&#x533A;&#x7684;&#x6BCF;&#x4E2A;&#x526F;&#x672C;&#x5206;&#x5E03;&#x5728;&#x4E0D;&#x540C;&#x7684; broker &#x4E0A;&#x3002;&#x5047;&#x8BBE;&#x5206;&#x533A; 0 &#x7684;&#x9996;&#x9886;&#x526F;&#x672C;&#x5728; broker2 &#x4E0A;&#xFF0C; &#x90A3;&#x4E48;&#x53EF;&#x4EE5;&#x628A;&#x8DDF;&#x968F;&#x8005;&#x526F;&#x672C;&#x653E;&#x5728; broker3 &#x548C; broker 4 &#x4E0A;&#xFF0C;&#x4F46;&#x4E0D;&#x80FD;&#x653E;&#x5728; broker2 &#x4E0A;&#xFF0C;&#x4E5F;&#x4E0D;&#x80FD;&#x4E24;&#x4E2A;&#x90FD;&#x653E;&#x5728; broker3 &#x4E0A;&#x3002;</p>
</li>
<li><p>&#x5982;&#x679C;&#x4E3A; broker &#x6307;&#x5B9A;&#x4E86;&#x673A;&#x67B6;&#x4FE1;&#x606F;&#xFF0C;&#x90A3;&#x4E48;&#x5C3D;&#x53EF;&#x80FD;&#x628A;&#x6BCF;&#x4E2A;&#x5206;&#x533A;&#x7684;&#x526F;&#x672C;&#x5206;&#x914D;&#x5230;&#x4E0D;&#x540C;&#x673A;&#x67B6;&#x7684; broker &#x4E0A;&#x3002;&#x8FD9;&#x6837;&#x505A;&#x662F;&#x4E3A;&#x4E86;&#x4FDD;&#x8BC1;&#x4E00;&#x4E2A;&#x673A;&#x67B6;&#x7684;&#x4E0D;&#x53EF;&#x7528;&#x4E0D;&#x4F1A;&#x5BFC;&#x81F4;&#x6574;&#x4F53;&#x7684;&#x5206;&#x533A;&#x4E0D;&#x53EF;&#x7528;&#x3002;</p>
</li>
</ol>
<h4 id="&#x5982;&#x4F55;&#x5B9E;&#x73B0;&#x4E0A;&#x8FF0;&#x76EE;&#x6807;-&#x4F7F;&#x7528;&#x8F6E;&#x8BE2;&#x7684;&#x65B9;&#x5F0F;">&#x5982;&#x4F55;&#x5B9E;&#x73B0;&#x4E0A;&#x8FF0;&#x76EE;&#x6807;: &#x4F7F;&#x7528;&#x8F6E;&#x8BE2;&#x7684;&#x65B9;&#x5F0F;.</h4>
<p>&#x4E3A;&#x4E86;&#x5B9E;&#x73B0;&#x8FD9;&#x4E2A;&#x76EE;&#x6807;&#xFF0C;&#x6211;&#x4EEC;&#x5148;&#x968F;&#x673A;&#x9009;&#x62E9;&#x4E00;&#x4E2A; broker(&#x5047;&#x8BBE;&#x662F; 4)&#xFF0C;&#x7136;&#x540E;&#x4F7F;&#x7528;&#x8F6E;&#x8BE2;&#x7684;&#x65B9;&#x5F0F;&#x7ED9;&#x6BCF;&#x4E2A; broker &#x5206;&#x914D;&#x5206;&#x533A;&#x6765;&#x786E;&#x5B9A;&#x9996;&#x9886;&#x5206;&#x533A;&#x7684;&#x4F4D;&#x7F6E;&#x3002;</p>
<p>&#x4E8E;&#x662F;&#xFF0C;&#x9996;&#x9886;&#x5206;&#x533A;0 &#x4F1A;&#x5728; broker4 &#x4E0A;&#xFF0C;&#x9996;&#x9886;&#x5206;&#x533A; 1 &#x4F1A;&#x5728; broker5 &#x4E0A;&#xFF0C;&#x9996;&#x9886;&#x5206;&#x533A;2 &#x4F1A;&#x5728; brokerO &#x4E0A;&#xFF08;&#x53EA;&#x6709; 6 &#x4E2A; broker&#xFF09;&#xFF0C;&#x5E76;&#x4EE5;&#x6B64;&#x7C7B;&#x63A8;&#x3002;</p>
<p>&#x7136;&#x540E;&#xFF0C;&#x6211;&#x4EEC;&#x4ECE;&#x5206;&#x533A;&#x9996;&#x9886;&#x5F00;&#x59CB;&#xFF0C; &#x4F9D;&#x6B21;&#x5206;&#x914D;&#x8DDF;&#x968F;&#x8005;&#x526F;&#x672C;&#x3002; </p>
<p>&#x5982;&#x679C;&#x5206;&#x533A;0 &#x7684;&#x9996;&#x9886;&#x5728; broker4 &#x4E0A;&#xFF0C; &#x90A3;&#x4E48;&#x5B83;&#x7684;&#x7B2C;&#x4E00;&#x4E2A;&#x8DDF;&#x968F;&#x8005;&#x526F;&#x672C;&#x4F1A;&#x5728; broker5 &#x4E0A;&#xFF0C; &#x7B2C;&#x4E8C;&#x4E2A;&#x8DDF;&#x968F;&#x8005;&#x526F;&#x672C;&#x4F1A;&#x5728; broker O &#x4E0A;, ...&#x3002; </p>
<p>&#x5206;&#x533A;1 &#x7684;&#x9996;&#x9886;&#x5728; broker5 &#x4E0A;&#xFF0C; &#x90A3;&#x4E48;&#x5B83;&#x7684;&#x7B2C;&#x4E00;&#x4E2A;&#x8DDF;&#x968F;&#x8005;&#x526F;&#x672C;&#x5728; brokerO &#x4E0A;&#xFF0C; &#x7B2C;&#x4E8C;&#x4E2A;&#x8DDF;&#x968F;&#x8005;&#x526F;&#x672C;&#x5728; broker1 &#x4E0A; ...&#x3002;</p>
<hr>
<h3 id="322-&#x5206;&#x533A;&#x6587;&#x4EF6;&#x7BA1;&#x7406;">3.2.2 &#x5206;&#x533A;&#x6587;&#x4EF6;&#x7BA1;&#x7406;</h3>
<p>&#x4FDD;&#x7559;&#x6570;&#x636E;&#x662F; Kafka &#x7684;&#x4E00;&#x4E2A;&#x57FA;&#x672C;&#x7279;&#x6027;&#xFF0C; &#x4F46;&#x662F; Kafka &#x4E0D;&#x4F1A;&#x4E00;&#x76F4;&#x4FDD;&#x7559;&#x6570;&#x636E;&#xFF0C;&#x4E5F;&#x4E0D;&#x4F1A;&#x7B49;&#x5230;&#x6240;&#x6709;&#x6D88;&#x8D39;&#x8005;&#x90FD;&#x8BFB;&#x53D6;&#x4E86;&#x6D88;&#x606F;&#x4E4B;&#x540E;&#x624D;&#x5220;&#x9664;&#x6D88;&#x606F;&#x3002; </p>
<p>&#x76F8;&#x53CD;&#xFF0C;Kafka &#x7BA1;&#x7406;&#x5458;&#x4E3A;&#x6BCF;&#x4E2A;&#x4E3B;&#x9898;&#x914D;&#x7F6E;&#x4E86;&#x6570;&#x636E;&#x4FDD;&#x7559;&#x671F;&#x9650;&#xFF0C; &#x89C4;&#x5B9A;&#x6570;&#x636E;&#x88AB;&#x5220;&#x9664;&#x4E4B;&#x524D;&#x53EF;&#x4EE5;&#x4FDD;&#x7559;&#x591A;&#x957F;&#x65F6;&#x95F4;&#xFF0C; &#x6216;&#x8005;&#x6E05;&#x7406;&#x6570;&#x636E;&#x4E4B;&#x524D;&#x53EF;&#x4EE5;&#x4FDD;&#x7559;&#x7684;&#x6570;&#x636E;&#x91CF;&#x5927;&#x5C0F;&#x3002;</p>
<p>&#x6709;&#x4E24;&#x79CD;&#x7B56;&#x7565;&#x53EF;&#x4EE5;&#x5220;&#x9664;&#x65E7;&#x6570;&#x636E;&#xFF1A;</p>
<ul>
<li>&#x57FA;&#x4E8E;&#x65F6;&#x95F4;&#xFF1A;<code>log.retention.hours=168</code>(&#x9ED8;&#x8BA4;&#x4E00;&#x5468;)</li>
<li>&#x57FA;&#x4E8E;&#x5927;&#x5C0F;&#xFF1A;<code>log.retention.bytes=1073741824</code>( 1G )</li>
</ul>
<p>&#x4EE5;&#x5148;&#x5230;&#x7684;&#x4E3A;&#x51C6;.</p>
<p>&#x9700;&#x8981;&#x6CE8;&#x610F;&#x7684;&#x662F;&#xFF0C;&#x56E0;&#x4E3A; Kafka &#x8BFB;&#x53D6;&#x7279;&#x5B9A;&#x6D88;&#x606F;&#x7684;&#x65F6;&#x95F4;&#x590D;&#x6742;&#x5EA6;&#x4E3A; <code>O(1)</code>&#xFF0C;&#x5373;&#x4E0E;&#x6587;&#x4EF6;&#x5927;&#x5C0F;&#x65E0;&#x5173;&#xFF0C;&#x6240;&#x4EE5;&#x8FD9;&#x91CC;&#x5220;&#x9664;&#x8FC7;&#x671F;&#x6587;&#x4EF6;&#x4E0E;&#x63D0;&#x9AD8; Kafka &#x6027;&#x80FD;&#x65E0;&#x5173;&#x3002;</p>
<h3 id="323-&#x7D22;&#x5F15;">3.2.3 &#x7D22;&#x5F15;</h3>
<p>&#x6D88;&#x8D39;&#x8005;&#x53EF;&#x4EE5;&#x4ECE; Kafka &#x7684;&#x4EFB;&#x610F;&#x53EF;&#x7528;&#x504F;&#x79FB;&#x91CF;&#x4F4D;&#x7F6E;&#x5F00;&#x59CB;&#x8BFB;&#x53D6;&#x6D88;&#x606F;&#x3002; &#x5047;&#x8BBE;&#x6D88;&#x8D39;&#x8005;&#x8981;&#x8BFB;&#x53D6;&#x4ECE;&#x504F;&#x79FB;&#x91CF; 100 &#x5F00;&#x59CB;&#x7684; 1MB &#x6D88;&#x606F;&#xFF0C; &#x90A3;&#x4E48; broker &#x5FC5;&#x987B;&#x7ACB;&#x5373;&#x5B9A;&#x4F4D;&#x5230;&#x504F;&#x79FB;&#x91CF; 100, &#x7136;&#x540E;&#x5F00;&#x59CB;&#x4ECE;&#x8FD9;&#x4E2A; &#x4F4D;&#x7F6E;&#x8BFB;&#x53D6;&#x6D88;&#x606F;&#x3002; </p>
<p>&#x4E3A;&#x4E86;&#x5E2E;&#x52A9; broker &#x66F4;&#x5FEB;&#x5730;&#x5B9A;&#x4F4D;&#x5230;&#x6307;&#x5B9A;&#x7684;&#x504F;&#x79FB;&#x91CF;&#xFF0C;Kafka &#x4E3A;&#x6BCF;&#x4E2A;&#x5206;&#x533A;&#x7EF4;&#x62A4;&#x4E86;&#x4E00;&#x4E2A;&#x7D22;&#x5F15;&#x3002; &#x7D22;&#x5F15;&#x628A;&#x504F;&#x79FB;&#x91CF;&#x6620;&#x5C04;&#x5230;&#x7247;&#x6BB5;&#x6587;&#x4EF6;&#x548C;&#x504F;&#x79FB;&#x91CF;&#x5728;&#x6587;&#x4EF6;&#x91CC;&#x7684;&#x4F4D;&#x7F6E;&#x3002;</p>
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